Tool for sharpening knives and the like



Aug. 10 1926.

v A. J. TANNER TOOL FOR SHAREENING KNIVES A ND THE LIKE Filed Feb. 24,1925 Patented Aug. 10, 1926. i

1,595,322 PATENT OFFICE.

I 'ARNOLD J. TANNER, OF NORTH HAVEN, CONNECTICUT.

TOOL FOR SHAEPENI G KNIVES Ann THE LIKE.

Application filed February 24, 1925. Serial No. 11,130.

The present invention relates to tools of a certain type, for example,knife sharpeners and can-openers, and certain objects of the invention,among others, are to improve the construction of tools of this kind soas to increase the 'efliciency thereof; to improve the appearance, andto facilitate production wherein a tool of a high grade may be producedat a comparatively low cost.

The present invention is an improvement 7 in or modification of the toolwhich forms the subject matter of U. S. Patent No. 1,523,089, datedJanuary 13, 1925. In the present instance, the tool is constructed witha body member first formed with open or outwardly converging members andone member carries bearings or supports for the operative member ormembers. The invention is applied to knife sharpeners of a type having apair of fiat discs mounted in different planes so as to be held in aposition wherein they will overlap only at their edges. With thisarrangement, when a knife is drawn at right angles between the twodiscs, the cutting edges of the discs will bear on both sides of theedge of the knife and thus sharpening the edge. The body member of thetool is preferably composed of a malleable iron casting or forging whichpermits of the closing of bifurcated members of p the body, therebykeeping the discs in the proper operative position.

In such cases where the invention is applied to can openers theoperative member is the blade of the tool, and to prevent rotation ofthe blade on the bearing, means are provided which interlock to hold theblade in a rigid position for operation. The body of the can opener issubstantially the same as the body of the knife sharpener including thetwo lugs which are formed on one of the bifurcated members and in thiscase the lug located at the end of the body operates as a fulcrum forthe tool.

The improved tool in its several modified forms will be more fullydescribed hereinafter with reference to the accompanying drawings,wherein:

Figure 1. is a perspective view showing the invention applied to a toolin which the head or body portion is composed of a casting;

Figure 2 is a longitudinal sectional view of the same construction;

Figure 3 is a detail perspective View showing the form of the castingbefore it is assembled; and

Figure t'shows modified form of the casting.

Referring to 4 inclusive, the completev tool comprises the handle 1 andthe bifurcated head or' body member '2 in i which discs 3 and 3 aremounted. These discs are of the usual form and may have straight orbeveled edges as desired. 7

The tool illustrated is composed of a forging or preferably of amalleable iron casting. This casting 14 has as integral parts thebifurcated members 15 and 16, also the tang 17, and to facilitate thecasting operation, the member 15 is spread open. In ,a'ssembling thetool, the member 15 is closed to form the slot 18 to receive the cutterdisc 3. A bearing is provided for this disc by means of the rivet 19which further serves to prevent the spreading of the members 15 and 16resulting from hard use. The rivet 20 provides a. bearing for the disc 3In Figure 4, the casting is substantially the same, with the exceptionthat to eliminate the drilling and riveting operation, the lugs or posts21 and 22 are cast integral on the member 16 and in assembling the tool,the disc 3 is mounted on the post 21 which is subsequently headed toretain the disc in lace. The other lug 22 projects from the elevatedpart 23 of the member 16 and which elevated or thickened portion servesas a stiffening means for the member 16 and keeps the discs in properalignment without the necessity of using spacing washers. In this lattermodification, the member 15 is pressed down on the lug 22, and thestiffness of the member 15 will prevent the displacement of the disc 3,or if desired, the lug 22 may be lengthened so as to extend through ahole in the member 15 and then the protruding end can be headed in theusual way.

The longer member 16 preferably carries the bearing for both discs, thisarrangement being found desirable to facilitate the casting operation.

Various modifications, other than those herein described, may be madewithout departing from the spirit of the invention and it is to beunderstood all modifications coming fairly within the terms of theappended claims shall be covered therein.

I claim:

1. In a. tool as described, a body member having an end and anintermediate bearing, rotating discs mounted on said bearings, said thedrawings, Figures 1 to 1 end bearing being formed to provideselfretentive means for the disc or discs mounted thereon, said meansacting conjunctively With the overlapping: disc or'discs mounted on theintermediate bearing and which latter disc or discs are heldinanoperative position by a forked end of said body member.

2. In a tool as described, body having openforked members adapted to beclosed, one member carrying intermediate and end bearings or supports ondi ii'erent planes, at pair-of discs mountedon said bearings 0rsupports, and the other member of said body When closed operating toretain said discs in an operative position.

3; A; tool having operative elements com prising; a body formed withopen bifurcated members, one member carrying bearings or supportsondifierentplanes for a pair oi rotating discs and the other member Whenclosed" constituting retentive means for one of said discs. I

Signed at: New Haven, county of" New Haven and" State offConnecticut;this 21st day of February, 1925:

AtR NOLD J; TANNER.

